The original post: /r/diy by /u/Big_Ability5052 on 2024-12-26 17:30:50.

I’m installing a drop ceiling in my basement and I have a question. The room layout is about 11’ 7 inches, so around 139”. The videos say that it needs to be “a border panels length” or a border panel + 24”. If it is roughly 3” extra on the sides would the “border panel” be 3” I’m not really sure what “border panel length” actually means.